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someone gave me loads of toilet roll inserts for my runner beans not doing them yet but what do you do about the bottom as it is open any ideas,pls let me know taaaaa
gunners

This method relies on the root of the bean holding the putting medium together. However, this means your roots are constricted a bit which isn't ideal. In practice if you make sure that your bottom inch of compost is well packed down it'll swell a bit when it's wet and usually won't fall out if you're careful. Just don't leave it too long before planting out.

I use fruit punnets for the loo rolls - 8 of them usually fit into one punnet. I stick them in, fill them with compost (with the help on a old funnel, the long bit cut off to make the opening a bit wider - also useful for filling jam jars), and then put the seed in. The punnet holds them together and keeps the moisture in, too (unless they are the type with holes - then you need another tray underneath). By the time I plant them out the roots have done the trick and not too much falls out the bottom.